%X This paper discusses the water security of two municipalities in relation to their position within urban fringe. Water security depends on a set of independent and dependent variables that are dynamic within urban fringe. %T Water security and the urban fringe: Santa Cruz Papalutla and Santa María del Tule; water security in relation to the position within the urban fringe of Oaxaca de Juárez. %D 2005 %A J. Dijkman %L theses_frw1664